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Old 10-06-2020, 10:18 PM #1
Hunter61 Hunter61 is offline
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Rear axle vent question.
I want to replace the breather vent on the rear axle of my '04 4runner sport.
The thing I'm not understanding is that everywhere I look for a new one online all I'm seeing is something that looks like this. I am quite certain the breather vent I'm thinking of has a pipe thread and not a barb for attaching to a hose.
Anyone else encounter this or maybe it's another case of the picture doesn't necessarily match the actual part?
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Old 10-06-2020, 11:31 PM #2
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There's a guy on TW that sells a kit to extend it to the gas tank area (includes fitting/hose/clamp) for like $30 shipped. I'll do that to replace mine just haven't gotten around to it. Link in case your interested.

For sale: BlaisBrosTacos Diff Breather Mod Kits! - $30 - Free shipping or free install! | Tacoma World

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Old 10-07-2020, 08:24 AM #3
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Quote:
Originally Posted by Hunter61 View Post
I want to replace the breather vent on the rear axle of my '04 4runner sport.
The thing I'm not understanding is that everywhere I look for a new one online all I'm seeing is something that looks like this. I am quite certain the breather vent I'm thinking of has a pipe thread and not a barb for attaching to a hose.
Anyone else encounter this or maybe it's another case of the picture doesn't necessarily match the actual part?
You want a threaded breather.

I’m selling a kit that that reroutes all the way to the engine bay. $40 including shipping and ready to be sent out now!

https://www.toyota-4runner.org/for-sale-t4r-items/287007-fs-3rd-4th-5th-gen-rear-differential-relocate-kit-$40-free-shipping.html
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Old 10-07-2020, 09:01 AM #4
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You can use the threaded vent at the end of the hose by hose clamping it in place. All you need is 4’ of 3/8” hose and a 3/8” pipe thread nipple for the differential and a fist full of zip ties.
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Old 10-07-2020, 09:40 AM #5
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Quote:
Originally Posted by Hunter61 View Post
I want to replace the breather vent on the rear axle of my '04 4runner sport.
The thing I'm not understanding is that everywhere I look for a new one online all I'm seeing is something that looks like this. I am quite certain the breather vent I'm thinking of has a pipe thread and not a barb for attaching to a hose.
Anyone else encounter this or maybe it's another case of the picture doesn't necessarily match the actual part?
Berty_k's kit is great. I used it, and it had easy instructions and everything you need. If you don't have fuel hose laying around, its a great option.

If you need to replace it, make sure you move it somewhere useful either the gas tank or the engine bay. This is a weak point on the 4runner. Most of the breathers are up in the engine bay, except the rear axle.
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Old 10-07-2020, 07:56 PM #6
Hunter61 Hunter61 is offline
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Thanks for the replies guys, I'm going to consider moving the breather vent off the rear axle. I don't do much off roading and never take it in any kinda standing water so I might just get a stock one I found on line for about $8.

My rear passenger brake was squealing and when I removed the tire to check my brakes I found oil everywhere. Some research told me to check the breather vent and sure enough, I was pretty much just a lump of rust.
After working on it with a wire brush, generous amounts of PBlaster and several taps with a small hammer I managed to free it up. Soon as it loosened up I could see the PBlaster bubble up as the vent started releasing pressure from inside the axle.
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Old 10-07-2020, 09:49 PM #7
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Thisone looks lilke top part of breather line
i threaded my ones got barbed fittings from air tolls supply and runed them high
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